A rock is found to have 12.75 mg of 238U and 1.19 mg of 206 Pb. Determine the age of therock. The half-life of 238U is 4.51 x 10⁹years.7.5 x 108 years5.8 x 108 years4.7 x 108 years9.7 x 108 years3.9 x 108 years6.6 x 108 years

Age of rockT = (2.303 / ) *log (No/N) Where = 0.693/t1/2Where,No is the initial quantity of 238U…

Answered: A rock is found to have 12.75 mg of…

Chemistry

10th Edition

ISBN:9781305957404

Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Chapter1: Chemical Foundations

Section: Chapter Questions

Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...

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In a nuclear reactor, the excess neutrons produced from fission are absorbed by elements, preferably in solid form, which will not undergo fission when they absorb a neutron. From the table below, choose the best material to absorb neutrons in a nuclear reactor, and then explain your choice. Half-lives of isotopes Isotope Half-Life (if unstable) 1H stable 2H stable 3H 12.3 years 12C stable 13C stable 14C 5730 years 27Al stable 28Al 2.25 minutes 209Bi stable 210Bi 5.01 days
A moon rock collected by a U.S. Apollo mission is estimated to be 4.00 billion years old by uranium/lead dating. Assuming that the rock did not contain any lead when it was formed, what is the current mass of Pb206 in the rock, if it currently contains 1.430 g of U238? The half-life of U238 is 4.47×109 years.
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Ruthenium-106 (106Ru) is used to treat melanoma in the eye. This isotope decays by β– emission with a half-life of 373.59 days. One source of the isotope is reprocessed nuclear reactor fuel. How many protons and neutrons does the 106Ru nucleus contain? Identify the missing daughter nucleus in the β– emission decay of 106Ru below. How many years after 106Ru is implanted in the eye does it take for its decay rate (or activity) to be reduced to 27.5% of the initial decay rate? Use 1 year = 365 days.
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A rock is found to have 12.75 mg of 238U and 1.19 mg of 206 Pb. Determine the age of the rock. The half-life of 238U is 4.51 x 10⁹ years. 7.5 x 108 years 5.8 x 108 years 4.7 x 108 years 9.7 x 108 years 3.9 x 108 years 6.6 x 108 years